Journal of Environmental Conservation Engineering
Online ISSN : 1882-8590
Print ISSN : 0388-9459
ISSN-L : 0388-9459
Volume 36 , Issue 12
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  • Katsuhiko YOSHIKAWA, Yoshinori KANJO, Yasushi MATSUFUJI, Isao FUKUNAGA ...
    2007 Volume 36 Issue 12 Pages 885-892
    Published: December 20, 2007
    Released: December 25, 2008
    JOURNALS FREE ACCESS
    One of the processes to degrade dioxin in landfill leachate is the AOP(advanced oxidation process) method that uses ultraviolet rays or hydrogen peroxide together with ozone. In this research, we used the experimental result of the AOP method and applied to various kinds of experimental systems to determine the relationship between the amount of ozone reaction and the amount of dioxin degradation. The main results were as follows: The TOC(Total Organic Carbon) in the raw leachate consumed the supplied ozone by approximately 3.1(mgO3/mgTOC). It could be expressed in a linear equation between the ozone reaction amount revised by the TOC and the amount of dioxin degradation, and the slope was about 11.5(pgDXN/mgO3). A function of AOP can be expressed by comparing the quantity of suitable ozone reaction to the dioxin degradation. From the degradation ratio of each homologs, the degradation is mainly caused by the hydroxyl radical. To follow the dioxin discharge standard value, it is sufficient to guarantee the revised ozone reaction amount is more than 200mg/l.
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